With clashes of different civilizations, this cross-civilization transmission faces such problems as transmission hegemony, asymmetric transmission and borrowism.

In the process of analyzing its roots and seeking proper remedial approaches, people come to realize that the problem is essentially due to the worldwide spread and hegemony of English in the world, which constitutes the problem of endangered languages.

US took the biggest beneficiary from globalization,by using its absolute advantage in information and network technology,grasped the world media hegemony firmly,and demonstrated "media hegemonism" from the four big medium,including the newspaper,the broadcast,the television and the networks.

It integrates the merits of both RBAC (role based access control) and role-based trust management and can effectively control the propagation of permissions of different sensitivity levels in roles.